[volt-nuts] traceable calibration
gbusg
gbusg at comcast.net
Thu Sep 8 23:23:21 UTC 2011
Hi Andreas,
You wrote:
>Under which conditions the instruments will be adjusted
>during calibration?
> When missing the 1 year spec or
>When missing the 24 hours spec?
Good question! The term "calibration" means different things in different
disciplines and application of it varies by company and product even within
a given discipline. In some disciplines, there's an expectation that the lab
will *adjust* your instrument. But I think most of the time in electrical
metrology the lab runs a *Performance Test" but does not adjust unless a
parameter is out of tolerance (OOT). Some paper standards and/or customers
require the lab to adjust if a parameter's value reaches the limit of a spec
*guardband* limit. There has been much debate about this topic down through
the years within metrology organizations and paper standards writing
committees.
If you want to know how the German Keithley lab handles this topic with
regards to Keithley 2000 calibration, you will have to ask them. Do please
let us know what they tell you. (I'm curious too!)
Best,
Greg
More information about the volt-nuts
mailing list